Machine for forming clips on horseshoes.



G. F. MA-RSKELL. MACHINE FOR FORMING CLIPS 0N HORSESHOES. APPLICATIONFILED OCT. 11, 1915.

1 1 98,647 Patented Sept. 19, 1916.

2 SHEETS-SHEET 1- wea /M01 e. F. MA RSKELL. MACHINE FOR FORMING CLIPS ONHORSESHOES.

APPLICATION FILED OCT. II. 1915.

Patented Sept. 19, 1916,

2 SHEETSSHEET 2.

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UNITED STATESPATENT OFFICE.

GEORGE F. MARSKELL, 0F ERIE, PENNSYLVANIA, ASSIGNOR TO UNITED STATESHORSESHOE COMPANY, OF ERIE, PENNSYLVANIA, A CORPORATION OF PENN-SYLVANIA.

MACHINE FOR FORMING CLIPS ON HORSESI-IOES.

Application filed October 11, 1915.

To all whom it may concern: 1

Be it known that I, GEORGE F. MARsKELL, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented new and useful Improvements in Machines for Forming Clips onHorseshoes, of which the following is a specification.

This invention relates to machines for forming clips on horse shoes andconsists in certain improvements in the construction thereof as will behereinafter fully described and pointed out in the claims.

The invention is illustrated in the accompanying drawings as followsFigure 1 shows a plan view of the machine. Fig. 2 a front elevation ofthe machine. Fig. 3 a section on the lines 33 in Figs. 1 and 2. Fig. 4 aplan view of the shoe support. Fig. 5 a front elevation of the same.Fig. 6a section on the line 6-6 in Figs. 4 and 5. Fig. 7a rear view ofthe plunger. Fig. 8 a side elevation of the same.

' Fig. 9 a plan view of a toe portion of a shoe with the completed clipthereon. Fig. 10 an end view of a toe portion of a shoe at thecompletion of the operation of the plunger. Fig. 11 a front elevation ofa toe portion of the shoe with the clip completed.

The frame of the machine is made up of a bed plate 1 which is ofrectangular shape. Legs 2 are bolted to the bottom of this bed plate andthe superstructure made up of the posts 3 at the rear, front and backrails 4 and the cross piece 5 at the front and supporting posts 5 at theends of the rail 5.

The shoe support 6 rests on the front portion of the bed plate. It hasthe slotted openings 7 at the ends by means of which it is bolted to thebed plate by means of screws 8 (see Fig. 2). A backing plate 9 issecured to the front face of the bed plate 1 and set screws 10 extendthrough the backing plate 9 against the shoe support 6 and hold it inplace on the bed plate. The shoe support has a central opening 11 inwhich is arranged a projection on the shoe form 12. The shoe form issecured in place with the projection in the opening 11 by a screw 13which extends into the shoe support 6. The shoe form may be adjustedrelatively to the plate by means of a set screw 14 which extends throughthe rear wall of the shoe support and the screw is locked in adjustmentby a jam nut 15. Screws 16 extend Specification of Letters Patent.

Patented Sept. 19, 1916.

Serial No. 55,157.

through the front face against the shoe form 7 so as to oppose the setscrew 14. A guide clip 17 1s carried by a slotted plate 18. The slottedplate is secured on the shoe support by a screw 19.

In practice the shoe is placed on the shoe this purpose is as follows: Aclamp plate 20 extends over the shoe support. Rods 21 extend from theends of the clamp plate through openings in the front side of the bedplate. A rod 22 connects the rods 21 and the rod 22 passes through aslot 23 in the rock arm 24. The rock arm 24 is fixedon a rock shaft 25.The rock shaft is carried in bearings 25 secured to the underside of thebed plate. A weighted arm 26 extends from the rock arm 25 and returnsthe rock arms and clamps 20 after each clamping operation. A rock arm 27is secured to the rock shaft 25. It has the cam roller 28 at its upperend in the path of a cam 29. The cam 29 is fixed on a shaft 30. Theshaft 30 is mounted in bearings 31 on the sides of the bed plate 1. Agear 32 is fixed on the end of the shaft 30 and meshes a gear 33 on thedrive shaft 34. The drive shaft'34 is journaled in bearings 34 on thesides of the frame. Tight and loose pulleys 35 and 36 are arranged onthe end of the drive shaft 34 and the fly wheel 37 is also fixed on saidshaft. In the operation of the machine, the drive shaft 34 rotatescontinuously, thus rotating the cam 29 continuously. The timing of themachine is such that the operator can remove a shoe and replace anotherover the shoe form in the interval between the action of the cam 29 onthe clamp mechanism. In order to slow the speed of the machine I preferto form the cam 29 with a double throw so that it actuates the clamptwice in each rotation of the shaft.

After the shoe is clamped it is desirable to strike up or force out apart of the toe portion of the shoe to furnish the material for the toeclip. This is accomplished by the following mechanism :A die 38 iscarried by a plunger 39. The plunger has a shoulder 40 against which theupper end of the die abuts. The die has a countersunk opening 41 inwhich a bolt 42 is arranged for clamping the die on the end of theplunger. The die is so shaped that as the plunger descends the plungerforces off a small portion of the metal on the front face of the toe ofthe shoe. The shoe support and shoe form are adjusted so as to advancethe front edge of the shoe so as to bring it in just the right relationto the die to strike up the right amount of material for the toe clip.In Fig. 9 is shown a toe portion 45 of a shoe and the toe clip 44. InFig. 10 is shown the struckup portion 46 as it is left by the die 38. InFig. 11 is shown a front view of the finished clip 44. The plunger 39extends through a guide groove 47 in the front rail 5 of thesuperstructure. A roller support 48 is secured in the upper end of theplunger by means of a bolt 49 which extends through a slot 47 in theupper end of the plunger. A roller 50 on the roller support 48 extendsthrough a slot 51 in the end of a lever 52. The lever 52 is journaled ona shaft 53 ex tending between the rails 4 of the superstructure. A camroller 54 is mounted on the lever 52 and extends into a cam slot 55 of acam 56. The cam 56 is fixed on the shaft 30. A spring 57 tends to returnthe lever 52 so as to return the plunger 47. While the cam slot 55 wouldaccomplish the return of the plunger it is necessary to have the plungerretracted promptly in order to clear the wiping swages and the spring 57is used for this purpose. After the die 38 has struck up the materialfrom which the toe clip is to be formed a wiping swage is passed over itto draw out the metal and complete the formation of the clip. Thisswaging is accomplished by the swage 58 which is fixed on the shaft 30.It is provided with the wiping rollers 59 which engage the struck-upportion 46 on the face of the shoe and draw it down over the anvil 6formed on the front face of the shoe support. It will be understood thatthe cam 56 has two throws and there are two wiping rollers 59. Themachine makes the two operations with each revolution of the shaft 30.

The timing of the different parts is as follows :-The shoe is placed onthe form. The clamp is drawn into position through the action of the cam29 and held clamped, the cam 29 having quite a dwell in the clampposition. The die 38 is then forced down striking up the material 46 forthe clip. The die is then retracted and the wiping roller 59 carriedover the face 6 drawing out the material 46 into the form of the clip44.

That I claim as new is 1. In a machine for forming clips on horse shoes,the combination of a shoe holding device; a die operating on the toe ofthe shoe in the holding device in a direction at right angles to theface of the shoe to force outwardly a body of metal; and a wiping swageacting in the same general direction as the die on the metal struck upby the die for drawing out the clip.

2. In a machine for forming clips on horse shoes, the combination of ashoe holding device; a die operating on the toe of the shoe in theholding device in a direction at right angles to the face of the shoe toforce out-.

wardly a body of metal; a wiping swage acting in the same generaldirection as the die on the metal struck up by the die for drawing outthe clip; and means carried by a shaft for actuating said device,advancing and retracting the die and advancing the swage.

3. In a machine for forming clips on horse shoes, the combination of ashoe support having a shoe form thereon; a clamp for securing the shoeon the support; a rock shaft; a rock arm actuating the clamp carried bythe rock shaft; a cam lever carried by the rock arm; a clamp cam holdingsaid cam lever; a cam shaft on which the cam is mounted; a die forforcing outwardly material from the front edge of the shoe on the shoesupport; a plunger carrying the die; a plunger lever for actuating theplunger; a die actuating cam carried by the cam shaft for actuating saidplunger lever; and a rotating swage carried by the cam shaft adapted toWipe the material struck up by the die to form the clip.

In testimony whereof I have hereunto set my hand.

GEORGE F. MARSKELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

